Verilink Red Zone Encryption (REMS) (880-502423-001) Product Manual - Manual (Page 15)

Features
Red Zone Encryption Management System (REMS) User Manual 1-5
Flexible DTE interfaces
The REMS provides all needed interfaces for direct connection to public
or private T1 media and to T1 or RS-422 Data Terminal Equipment
(DTE). The REMS access port is selectable between standard Superframe
(SF) framed signal (D4) or Extended Super Frame (ESF).
Some of the current DTE multiplexers and terminals provide ESF
capability only. REMS is selectable between ESF or D4 framing on the
DTE access port. If ESF is selected, data can be extracted from the ESF
framing information. FDL and CRC6 do not pass end-to-end.
3
However,
their functionality is provided via other REMS features. (For more
information, see Chapter 3, Theory of operation.)
Example DTE devices include:
■
T1 ATM switches
■
Public Branch Exchange (PBX) equipment
■
T1 framed multiplexers
■
Local Area Network (LAN) bridges and routers
■
Video conferencing equipment
Because DTE signal formatting is standard, specialized interfaces and
signal conditioning is not required.
Electrical interface is RS-442/449 via female DB-25 connectors. This
allows a variety of devices to be connected to the encrypted link (see
BRC, below).
3. Internally, REMS uses ESF for synchronization only and does not pass FDL and
CRC6 to the network.